Phosphoinositide 3-Kinase Promotes Oxidative Burst, Stomatal Closure and Plant Immunity in Bacterial Invasion
Phosphoinositide 3-kinase (PI3K) plays a vital role in plant response to abiotic stress. However, the role of PI3K in plant immunity is largely unknown. This study showed that PI3K enhanced resistance to pv DC3000 ( DC3000) and DC3000 ( ). Overexpression of promoted stomatal closure while PI3K inhib...
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Veröffentlicht in: | Frontiers in plant science 2020-01, Vol.10, p.1740-1740 |
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Hauptverfasser: | , , , , , , , , , |
Format: | Artikel |
Sprache: | eng |
Schlagworte: | |
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Zusammenfassung: | Phosphoinositide 3-kinase (PI3K) plays a vital role in plant response to abiotic stress. However, the role of PI3K in plant immunity is largely unknown. This study showed that PI3K enhanced
resistance to
pv
DC3000 (
DC3000) and
DC3000 (
). Overexpression of
promoted stomatal closure while PI3K inhibitors blocked that after spray inoculation. Additionally, gene expression of
was increased upon infection by
DC3000 (
), and SA upregulated
gene expression in this process. Furthermore, overexpression of
enhanced
gene expression after syringe infiltration with
DC3000 (
), while PI3K inhibitors inhibited that. The production of hydrogen peroxide and the expression of gene encoding antioxidant enzyme were both enhanced in
overexpressing lines after spray inoculation or syringe infiltration with
DC3000 (
). Collectively, these results unraveled a novel and broad role of PI3K in plant immunity which promoted stomatal closure and
gene expression possibly
regulating ROS production. |
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ISSN: | 1664-462X 1664-462X |
DOI: | 10.3389/fpls.2019.01740 |